TNY278PN

The TNY278PN by POWER is an energy-efficient, off-line switcher designed for enhanced flexibility and extended power range. Part of the TinySwitch-III family, this component is ideal for chargers and adapters for various electronic devices.

Key electrical specifications include an input voltage range of 85-265 VAC and an output power capability of up to 16W for adapter applications and 28W for peak or open frame designs at 230 VAC. It features selectable current limit via the BP/M capacitor value, allowing for optimization of efficiency in enclosed adapters or increased peak power in open frame applications. The device incorporates EcoSmart technology for extremely energy-efficient operation, easily meeting global energy regulations with low no-load power consumption.

Enhanced safety and reliability features include accurate hysteretic thermal shutdown protection with automatic recovery, and improved auto-restart for fault conditions. The TNY278PN also benefits from frequency jittering to reduce EMI filter costs and a pin-out that simplifies heatsinking to the PCB. Its SOURCE pins are electrically quiet, further contributing to low EMI.

Packaged in an 8-DIP (0.300", Single In-Line) format, the TNY278PN is designed for through-hole mounting. Its simple ON/OFF control requires no loop compensation, and it is self-biased, eliminating the need for a bias winding or bias components, which contributes to a lower system cost.